6 rounds

Joe
Butler
VS
Philadelphia
Jack O'Brien

O'Brien · KO 1/6

Sep 29, 1904 · Broadway A.C., Philadelphia, 🇺🇸

Butler going in2-7-0

O'Brien going in118-7-19

Confirmation✓ one source

MethodKO

Round1 of 6

Sources

English Wikipedia
side b · observed 2026-10-11
en.wikipedia.org/wiki/Philadelphia_Jack_O'Brien

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